I like waking up at plopping a SC bid in then getting a text at 11:03 with the confirmation. The only issue is when they build the SC late.

All the Satphone minutes expire after ~30 days so basically you need to spend around $500 a year for the basic access plans. The new two-way sat-PLB-things allow certain texting feature, but I don't think scheduling would appreciate my wife or brother calling them to confirm an assignment!